A deep-sea water profile particle fractionating filter sampler

Abstract

The application discloses a deep-sea water profile particle grading and filtering sampler, which comprises a sampling tank, a fixing base is threadedly connected to the top of the sampling tank, a connecting base is fixedly installed at the top of the fixing base, and a first collecting barrel and a second collecting barrel are sequentially clamped to the inner bottom wall of the sampling tank from left to right. The application is characterized in that the first through-hole plate and the second through-hole plate are different in the size of the hole diameter, when the holes on the second through-hole plate excessively contact the solid area on the first through-hole plate, the inflow rate of the water flow can be slowed down, and vice versa, so that the water flow entering speed can be adjusted under different water flow conditions, the applicability of the device is improved, the impact of the water flow falling on the first filter screen and the second filter screen is slowed down through the arrangement of the two groups of flow limiting plates, the first filter screen and the second filter screen are protected to a certain extent, and the closing of the lifting frame can also seal and protect the collected samples in the sampling tank.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of seawater sampler equipment, in particular to a deep-sea water profile particle grading filter sampler. BACKGROUND

[0002] Microplastics, water body particle concentration investigation and research is an important work of marine research, and environmental problems have attracted high attention from the whole society. At present, marine microplastics collection is mainly in seawater and sediments, and the seawater part is mainly collected by CTD, then separated in the laboratory, and collected by stratified plankton tow net. The CTD collection method is relatively cumbersome, and the water sample is often insufficient. The stratified plankton tow net collection method needs to be lowered separately, which causes low work efficiency in limited oceanographic survey ships. Therefore, related water body particle sampling equipment is needed to detect water samples.

[0003] Patent document: CN209911040U discloses a water body particle sampler, which comprises a cylinder, a filter screen and a particle collection film. The upper end of the cylinder is provided with a baffle, and the outer end face of the cylinder is provided with a suspension device. The suspension device comprises an air bag and a micro air pump. The air bag is annular and arranged along the outer end face of the upper part of the cylinder. The end face of the air bag is provided with a micro air pump. The micro air pump is provided with a control device and a storage battery. The present application has the advantages of simple structure and convenient operation.

[0004] However, in the above-mentioned patent, the device is driven by the rotation of the propeller of the motor when in use, which drives the water in the cylinder to flow downward, and the upper end of the cylinder flows into the water flow after filtration, thereby achieving the collection effect. When collecting, the water body particles in the cylinder lack airtight storage environment and protection. The collection tool of the above-mentioned device lacks adaptability when dealing with different water flow sizes.

[0005] The information disclosed in this BACKGROUND section is only intended to enhance the understanding of the general background of the application and should not be taken as recognition or admission that this information is prior art. SUMMARY

[0006] The present application aims to provide a deep-sea water profile particle grading filter sampler to solve the problems in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a deep-sea water profile particle grading filter sampler, comprising a sampling tank, a fixing seat is threadedly connected to the top of the sampling tank, and a connecting seat is fixedly installed on the top of the fixing seat.

[0008] The inner bottom wall of the sampling tank is sequentially clamped with the first collecting barrel and the second collecting barrel from left to right, the inner wall of the connecting seat is fixedly installed with a base, the top of the base is fixedly installed with a first through-hole plate, the outer surface of the first through-hole plate is sleeved with a second through-hole plate, the aperture of the second through-hole plate is smaller than that of the first through-hole plate, the hole density of the first through-hole plate is smaller, the bottom of the second through-hole plate is fixedly installed with a deflection ring, the outer surface of the deflection ring is fixedly installed with a deflection plate, the deflection plate is rotationally connected to the inside of the connecting seat, the front end of the deflection plate is fixedly installed with a deflection rod, the front end of the deflection rod is fixedly installed with a limiting handle, the top of the base is provided with a liquid inlet, the inner wall of the base is fixedly installed with a driving seat, and the liquid inlet is located on the outside of the driving seat, the inner wall of the driving seat is fixedly installed with a power supply seat, the top of the power supply seat is electrically installed with an electric telescopic rod, the top of the electric telescopic rod is fixedly installed with a lifting frame, the bottom of the lifting frame is fixedly installed with a sealing cover, the inner wall of the sealing cover is fixedly installed with a sealing gasket, and the inner wall of the fixing seat is sequentially installed with two groups of flow limiting plates from top to bottom.

[0009] Preferably, the bottom of the sampling tank is fixedly installed with a threaded block, the outer surface of the threaded block is threadedly connected with a base, the outer surface of the base is movably installed with an anti-skid seat around, the inner top wall and the inner bottom wall of the anti-skid seat are both embeddedly installed with a buffer tube, the inside of the buffer tube is slidably connected with a buffer rod, the inner wall of the buffer tube is fixedly installed with a buffer spring, and the front end of the buffer spring is fixedly connected to the tail end of the buffer rod, and the front end of the buffer rod is fixedly installed with an inclined clamping plate.

[0010] Preferably, the top of the outer surface of the first collecting barrel is embeddedly installed with a first filter screen, the top of the outer surface of the second collecting barrel is provided with a second filter screen, and the bottom of the outer surface of the sampling tank is fixedly installed with a plurality of one-way valves.

[0011] Preferably, the bottom of the outer surface of the sampling tank is fixedly installed with four connecting rods, the front end of the connecting rod is fixedly installed with a positioning ring, and the inside of the positioning ring is woundly connected with a lifting rope.

[0012] Preferably, the tail end of the anti-skid seat is fixedly installed with a positioning plate, the positioning plate is clamped in the inside of the base, the bottom of the base is threadedly penetratedly connected with a plurality of fixed bolts, the top of the fixed bolt is threadedly connected to the inside of the base, and the inside of the anti-skid seat is clamped with a counterweight.

[0013] Preferably, the top of the driving seat is fixedly installed with a limiting cover, and the top of the limiting cover is fixedly connected to the bottom of the first through-hole plate.

[0014] Preferably, the top of the inner wall of the second hole plate is fixedly installed with a linking ring, and the linking ring is rotationally connected to the inside of the first through-hole plate, and the outside of the top of the connecting seat is fixedly installed with an annular cover.

[0015] Preferably, the device uses amplification as follows:

[0016] S1, the top of the sampling tank is installed on the fixed seat by threaded connection when the device is in use, the top of the fixed seat is installed with a connecting seat, when the device is placed underwater for sampling work, the base can work through the power seat, which drives the lifting of the electric telescopic rod, and then drives the lifting of the lifting frame, the lifting frame is closed and fits the second through hole plate, and the sealing cover is clamped to the outside of the base, the liquid inlet is closed, when the electric telescopic rod drives the lifting of the lifting frame and the sealing cover, seawater can flow into the inside of the liquid inlet through the holes on the first through hole plate and the second through hole plate, and then into the inside of the sampling tank, the seawater entering the sampling tank can enter the inside of the first collecting barrel and the second collecting barrel through the first filter screen and the second filter screen respectively.

[0017] S2, after the seawater enters the limiting cover, the seawater can flow into the inside of the liquid inlet through the first through hole plate and the second through hole plate when the lifting frame is lifted, the turning lever and the limiting handle are arranged, the limiting handle is turned, the turning ring and the turning plate are driven to rotate, and then the second through hole plate is driven to rotate outside the first through hole plate, the sizes of the holes on the first through hole plate and the second through hole plate are different, when the holes on the second through hole plate excessively contact the solid area on the first through hole plate, the inflow rate of the water flow can be slowed down, and vice versa.

[0018] S3, the bottom of the sampling tank is screwedly and telescopically connected to the base, the surface of the base can be telescopically connected with the positioning plate after installation, and the positioning plate is connected and installed through the fixing screw, and then the anti-skid seat is connected and installed around the base, the counterweight is telescopically connected in the anti-skid seat, and the overall weight of the device can be increased.

[0019] S4, the sampling tank can be used by being connected with the connecting rod and the positioning ring, the lifting rope is wound on the positioning ring, the lifting rope is connected with the lifting equipment, and the device can be used by being put into water, the counterweight in the anti-skid seat is telescopically connected, the device can be conveniently installed with the fixed seat and the sampling tank, and the first collecting barrel and the second collecting barrel in the device can be taken out.

[0020] Compared with the prior art, the device has the advantages that:

[0021] 1. The application can slow down the inflow rate of water flow when the holes on the second through-hole plate contact the solid area on the first through-hole plate, and vice versa, to adjust the speed of water inflow under different water flow conditions, increase the applicability of the device, and protect the first and second filter screens in the first and second collecting barrels from the impact of water flow by setting two groups of flow limiting plates.

[0022] 2. The application can be used for device deployment by connecting the lifting rope to the lifting device, and the weight of the counterweight block can facilitate the placement of the device. The convenient installation between the fixed seat and the sampling tank also facilitates the removal of the first and second collecting barrels in the device, and adds flexibility to the device structure. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The figure is a schematic diagram of the three-dimensional structure of the application;

[0024] Figure 2 The figure is a schematic diagram of the second form of the application;

[0025] Figure 3 The figure is a schematic diagram of the fixed seat structure of the application;

[0026] Figure 4 The figure is a schematic diagram of the anti-skid seat structure of the application;

[0027] Figure 5 The figure is a schematic diagram of the inclined clamp plate structure of the application;

[0028] Figure 6 The figure is a schematic diagram of the connecting seat structure of the application;

[0029] Figure 7 The figure is a schematic diagram of the base structure of the application;

[0030] Figure 8 The figure is an enlarged schematic diagram of structure A in the application; Figure 4

[0031] Figure 9 The figure is an enlarged schematic diagram of structure B in the application. Figure 7

[0032] ​​In the figure: 1, sampling tank; 2, fixed seat; 3, connecting seat; 4, first collecting barrel; 5, second collecting barrel; 6, base; 7, first through-hole plate; 8, second through-hole plate; 9, steering ring; 10, steering plate; 11, steering rod; 12, limit handle; 13, liquid inlet; 14, driving seat; 15, power seat; 16, electric telescopic rod; 17, lifting frame; 18, sealing cover; 19, sealing pad; 20, flow limiting plate; 21, threaded block; 22, base; 23, anti-skid seat; 24, buffer tube; 25, buffer rod; 26, buffer spring; 27, inclined clamp plate; 28, first filter screen; 29, second filter screen; 30, one-way valve; 31, connecting rod; 32, positioning ring; 33, lifting rope; 34, positioning plate; 35, fixing bolt; 36, counterweight; 37, limiting cover; 38, linking ring; 39, annular cover. Embodiment

[0033] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 , a deep-sea water profile particle grading filter sampler, comprising a sampling tank 1, a fixed seat 2 is threadedly connected to the top of the sampling tank 1, a connecting seat 3 is fixedly installed on the top of the fixed seat 2, a first collecting barrel 4 and a second collecting barrel 5 are sequentially clamped on the inner bottom wall of the sampling tank 1 from left to right, a base 6 is fixedly installed on the inner wall of the connecting seat 3, a first through-hole plate 7 is fixedly installed on the top of the base 6, a second through-hole plate 8 is sleeved on the outer surface of the first through-hole plate 7, and the hole diameter of the second through-hole plate 8 is smaller than that of the first through-hole plate 7, the hole density of the first through-hole plate 7 is smaller, a steering ring 9 is fixedly installed on the bottom of the second through-hole plate 8, a steering plate 10 is fixedly installed on the outer surface of the steering ring 9, and the steering plate 10 is rotatably connected to the inside of the connecting seat 3, a steering rod 11 is fixedly installed on the front end of the steering plate 10, a limit handle 12 is fixedly installed on the front end of the steering rod 11, a liquid inlet 13 is formed on the top of the base 6, a driving seat 14 is fixedly installed on the inner wall of the base 6, and the liquid inlet 13 is located on the outer side of the driving seat 14, a power seat 15 is fixedly installed on the inner wall of the driving seat 14, an electric telescopic rod 16 is electrically installed on the top of the power seat 15, a lifting frame 17 is fixedly installed on the top of the electric telescopic rod 16, a sealing cover 18 is fixedly installed on the bottom of the lifting frame 17, a sealing pad 19 is fixedly installed on the inner wall of the sealing cover 18, two groups of flow limiting plates 20 are sequentially installed on the inner wall of the fixed seat 2 from top to bottom, a first filter screen 28 is embeddedly installed on the top of the outer surface of the first collecting barrel 4, a second filter screen 29 is formed on the top of the outer surface of the second collecting barrel 5, a plurality of one-way valves 30 are fixedly installed on the bottom of the outer surface of the sampling tank 1, a limiting cover 37 is fixedly installed on the top of the driving seat 14, and the top of the limiting cover 37 is fixedly connected to the bottom of the first through-hole plate 7;

[0034] The top of the sampling tank 1 is installed on the fixing seat 2 in a threaded manner, the top of the fixing seat 2 is installed with the connecting seat 3, when the device is placed underwater for sampling work, the base 6 can work through the power seat 15, which drives the lifting of the electric telescopic rod 16, and then drives the lifting of the lifting frame 17, when the lifting frame 17 is closed, it is attached to the second through-hole plate 8, and the sealing cover 18 is connected to the outside of the base 6, which closes the liquid inlet 13, when the electric telescopic rod 16 drives the lifting of the lifting frame 17 and the sealing cover 18, seawater can flow into the inside of the liquid inlet 13 through the holes on the first through-hole plate 7 and the second through-hole plate 8, and then into the inside of the sampling tank 1 through the lifting work of the electric telescopic rod 16, mainly driving the contact of the sealing cover 18 and the lifting frame 17 on the surface of the second through-hole plate 8, when the sealing cover 18 is closed, the tightness of the sealing cover 18 when connected to the base 6 can be increased by the setting of the sealing gasket 19, which plays a better sealing role, the seawater entering the sampling tank 1 can enter the inside of the first collection barrel 4 and the second collection barrel 5 through the first filter screen 28 and the second filter screen 29 respectively, the mesh aperture sizes of the first filter screen 28 and the second filter screen 29 are different, so the sample components collected in the first collection barrel 4 and the second collection barrel 5 are different, thereby increasing the applicability of the collection work of the device, after the seawater enters the limiting cover 37, as the lifting frame 17 rises, when the seawater enters through the first through-hole plate 7 and the second through-hole plate 8, the setting of the steering rod 11 and the limiting handle 12 can drive the rotation of the steering ring 9 and the steering plate 10 by rotating the limiting handle 12, and then drive the rotation of the second through-hole plate 8 outside the first through-hole plate 7, by the difference in aperture size between the first through-hole plate 7 and the second through-hole plate 8, when the holes on the second through-hole plate 8 excessively contact the solid area on the first through-hole plate 7, the inflow rate of the water flow can be slowed down, and vice versa, the inner wall of the connecting seat 3 can be provided with two groups of flow limiting plates 20, which can buffer the falling water flow and slow down the impact of the falling water flow on the first filter screen 28 and the second filter screen 29 on the first collection barrel 4 and the second collection barrel 5, thereby protecting the first filter screen 28 and the second filter screen 29.

[0035] Please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 8 and Figure 9The bottom of the sampling tank 1 is fixedly provided with a threaded block 21, the outer surface of the threaded block 21 is threadedly connected with a base 22, the outer surface of the base 22 is movably provided with an anti-skid seat 23 around, the inner top wall and the inner bottom wall of the anti-skid seat 23 are embeddedly provided with a buffer pipe 24, the buffer pipe 24 is slidably connected with a buffer rod 25, the inner wall of the buffer pipe 24 is fixedly provided with a buffer spring 26, the front end of the buffer spring 26 is fixedly connected with the tail end of the buffer rod 25, the front end of the buffer rod 25 is fixedly provided with an inclined clamping plate 27, the tail end of the anti-skid seat 23 is fixedly provided with a positioning plate 34, the positioning plate 34 is clamped in the inside of the base 22, the bottom of the base 22 is threadedly connected with a plurality of fixing bolts 35, the top of the fixing bolts 35 is threadedly connected with the inside of the base 22, the inside of the anti-skid seat 23 is clamped with a counterweight 36;

[0036] The bottom of the sampling tank 1 is fixedly provided with a threaded block 21, the outer surface of the threaded block 21 is threadedly connected with a base 22, the outer surface of the base 22 is movably provided with an anti-skid seat 23 around, the inner top wall and the inner bottom wall of the anti-skid seat 23 are embeddedly provided with a buffer pipe 24, the buffer pipe 24 is slidably connected with a buffer rod 25, the inner wall of the buffer pipe 24 is fixedly provided with a buffer spring 26, the front end of the buffer spring 26 is fixedly connected with the tail end of the buffer rod 25, the front end of the buffer rod 25 is fixedly provided with an inclined clamping plate 27, the tail end of the anti-skid seat 23 is fixedly provided with a positioning plate 34, the positioning plate 34 is clamped in the inside of the base 22, the bottom of the base 22 is threadedly connected with a plurality of fixing bolts 35, the top of the fixing bolts 35 is threadedly connected with the inside of the base 22, the inside of the anti-skid seat 23 is clamped with a counterweight 36;

[0037] Please refer to Figure 1 , Figure 2 and Figure 4 , the bottom of the outer surface of the sampling tank 1 is fixedly provided with four connecting rods 31, the front end of the connecting rod 31 is fixedly provided with a positioning ring 32, the inside of the positioning ring 32 is woundly connected with a lifting rope 33, the top of the inner wall of the second hole plate 8 is fixedly provided with a link ring 38, the link ring 38 is rotationally connected with the inside of the first through-hole plate 7, the outer side of the top of the connecting seat 3 is fixedly provided with an annular cover 39;

[0038] The sampling tank 1 can be conveniently installed with the fixed seat 2 and the sampling tank 1 during use, so as to facilitate the taking-out work of the first collecting barrel 4 and the second collecting barrel 5 inside.

[0039] When the device is used, the top of the sampling tank 1 is installed and connected to the fixed seat 2 in a threaded connection manner, the top of the fixed seat 2 is installed with the connecting seat 3, when the device is placed underwater for sampling work, the base 6 can work through the power seat 15, which drives the lifting movement of the electric telescopic rod 16, and then drives the lifting movement of the lifting frame 17, when the lifting frame 17 is closed, it is attached to the second through-hole plate 8, and the sealing cover 18 is connected to the outer side of the base 6, and the liquid inlet 13 is closed, when the electric telescopic rod 16 drives the lifting of the lifting frame 17 and the sealing cover 18, seawater can flow into the inside of the liquid inlet 13 through the holes on the first through-hole plate 7 and the second through-hole plate 8, and then into the inside of the sampling tank 1, the seawater entering the sampling tank 1 can enter the inside of the first collecting barrel 4 and the second collecting barrel 5 through the first filter screen 28 and the second filter screen 29, respectively, after the seawater enters the limiting cover 37, as the lifting frame 17 rises, when the seawater flows through the first through-hole plate 7 and the second through-hole plate 8, the seawater can flow through the setting of the steering rod 11 and the limiting handle 12, by rotating the limiting handle 12, thereby driving the rotation of the steering ring 9 and the steering plate 10, and then driving the rotation of the second through-hole plate 8 outside the first through-hole plate 7, by the difference in hole diameter between the first through-hole plate 7 and the second through-hole plate 8, when the holes on the second through-hole plate 8 excessively contact the solid area on the first through-hole plate 7, the inflow rate of the water flow can be slowed down, and vice versa, the inflow rate of the water flow can be accelerated, the bottom of the sampling tank 1 is installed and connected to the base 22 through the setting of the threaded block 21, after the installation of the base 22, the surface thereof can be inserted and installed with the positioning plate 34 in an insertion manner, and the positioning plate 34 after insertion can be installed and connected through the setting of the fixing bolt 35, and then the anti-skid seat 23 around the base 22 can be installed and connected, the inside of the anti-skid seat 23 can be installed and connected with the counterweight 36 in a clamping manner, thereby increasing the overall weight of the device, the sampling tank 1 can be used for the launching of the device through the setting of the connecting rod 31 and the positioning ring 32, the positioning ring 32 is wound with the lifting rope 33, the lifting device can be connected to the lifting rope 33, thereby being used for the launching of the device, and the clamping installation of the counterweight 36 in the anti-skid seat 23 facilitates the falling placement work of the device, the device can be conveniently installed with the fixed seat 2 and the sampling tank 1 during use, so as to facilitate the taking-out work of the first collecting barrel 4 and the second collecting barrel 5 inside.

[0040] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims with respect to the figures of the patent document.

Claims

1. A deep-sea water profile particle fractionating filter sampler comprising a sampling canister (1), characterized in that: The top of the sampling tank (1) is threadedly connected with a fixing seat (2), and the top of the fixing seat (2) is fixedly installed with a connecting seat (3); The inner bottom wall of the sampling tank (1) is sequentially clamped with a first collecting barrel (4) and a second collecting barrel (5) from left to right, the inner wall of the connecting seat (3) is fixedly installed with a base (6), the top of the base (6) is fixedly installed with a first through-hole plate (7), the outer surface of the first through-hole plate (7) is sleeved with a second through-hole plate (8), the aperture of the second through-hole plate (8) is smaller than that of the first through-hole plate (7), the hole density of the first through-hole plate (7) is smaller, the bottom of the second through-hole plate (8) is fixedly installed with a steering ring (9), the outer surface of the steering ring (9) is fixedly installed with a steering plate (10), and the steering plate (10) is rotationally connected to the inside of the connecting seat (3), the front end of the steering plate (10) is fixedly installed with a steering rod (11), the front end of the steering rod (11) is fixedly installed with a limiting handle (12), the top of the base (6) is provided with a liquid inlet (13), the inner wall of the base (6) is fixedly installed with a driving seat (14), and the liquid inlet (13) is located on the outside of the driving seat (14), the inner wall of the driving seat (14) is fixedly installed with a power supply seat (15), the top of the power supply seat (15) is electrically installed with an electric telescopic rod (16), the top of the electric telescopic rod (16) is fixedly installed with a lifting frame (17), the bottom of the lifting frame (17) is fixedly installed with a sealing cover (18), the inner wall of the sealing cover (18) is fixedly installed with a sealing gasket (19), the inner wall of the fixing seat (2) is sequentially installed with two groups of flow limiting plates (20) from top to bottom; The bottom of the sampling tank (1) is fixedly installed with a threaded block (21), the outer surface of the threaded block (21) is threadedly connected with a base (22), the outer surface of the base (22) is movably installed with anti-skid seats (23) around, the inner top wall and the inner bottom wall of the anti-skid seat (23) are embeddedly installed with buffer tubes (24), the inside of the buffer tube (24) is slidably connected with a buffer rod (25), the inner wall of the buffer tube (24) is fixedly installed with a buffer spring (26), and the front end of the buffer spring (26) is fixedly connected to the tail end of the buffer rod (25), the front end of the buffer rod (25) is fixedly installed with an inclined clamping plate (27); The top of the outer surface of the first collecting barrel (4) is embeddedly installed with a first filter screen (28), the top of the outer surface of the second collecting barrel (5) is provided with a second filter screen (29), and the bottom of the outer surface of the sampling tank (1) is fixedly installed with a plurality of one-way valves (30); The bottom of the outer surface of the sampling tank (1) is fixedly installed with four connecting rods (31), the front end of the connecting rod (31) is fixedly installed with a positioning ring (32), and the inside of the positioning ring (32) is wound with a lifting rope (33). The tail end of the anti-skid seat (23) is fixedly installed with a positioning plate (34), the positioning plate (34) is clamped in the interior of the base (22), a plurality of groups of fixed bolts (35) are threadedly penetrated and connected at the bottom of the base (22), the top of the fixed bolt (35) is threadedly connected in the interior of the base (22), and the interior of the anti-skid seat (23) is clamped with a counterweight (36); The top of the driving seat (14) is fixedly installed with a limiting cover (37), and the top of the limiting cover (37) is fixedly connected to the bottom of the first through-hole plate (7); The top of the second through-hole plate (8) is fixedly installed with a connecting ring (38), and the connecting ring (38) is rotatably connected to the interior of the first through-hole plate (7), and the outer side of the top of the connecting seat (3) is fixedly installed with an annular cover (39).

2. The deep-sea water profile particle grading and filtering sampler according to claim 1 is used in the following manner: S1, when the device is used, the top of the sampling tank (1) is installed and connected to the fixed seat (2) in a threaded connection manner, the top of the fixed seat (2) is installed with the connecting seat (3), when the device is placed underwater for sampling work, the base (6) can work through the power seat (15), which drives the lifting movement of the electric telescopic rod (16), and then drives the lifting movement of the lifting frame (17), when the lifting frame (17) is closed, it is fitted to the second through-hole plate (8), and the sealing cover (18) is clamped to the outer side of the base (6), which closes the liquid inlet (13), when the electric telescopic rod (16) drives the lifting of the lifting frame (17) and the sealing cover (18), seawater can flow into the interior of the liquid inlet (13) through the holes on the first through-hole plate (7) and the second through-hole plate (8), and then into the interior of the sampling tank (1), the seawater entering the sampling tank (1) can enter the interior of the first collection barrel (4) and the second collection barrel (5) through the first filter screen (28) and the second filter screen (29) respectively; S2, after the seawater enters the limiting cover (37), as the lifting frame (17) is lifted, when the seawater flows into through the first through-hole plate (7) and the second through-hole plate (8), the seawater can flow into through the setting of the steering rod (11) and the limiting handle (12), by rotating the limiting handle (12), the rotation of the steering ring (9) and the steering plate (10) is driven, and then the rotation of the second through-hole plate (8) outside the first through-hole plate (7) is driven, by the difference in hole diameter on the first through-hole plate (7) and the second through-hole plate (8), when the holes on the second through-hole plate (8) are in contact with the solid area on the first through-hole plate (7) too much, the inflow rate of the water flow can be slowed down, and vice versa. S3, the bottom of the sampling tank (1) is connected with the base (22) through the threaded block (21), the surface of the base (22) is connected with the positioning plate (34) through the plug-in mode after installation, the positioning plate (34) is connected through the setting of the fixing bolt (35), then the anti-skid seat (23) is connected around the base (22), the counterweight (36) is connected in the anti-skid seat (23) through the clamping mode, so as to increase the overall weight of the device, the inside of the anti-skid seat (23) is connected with the buffer pipe (24) and the buffer rod (25), the buffer rod (25) slides in the buffer pipe (24) to adjust the sliding of the inclined clamp (27); S4, the sampling tank (1) is connected with the connecting rod (31) and the positioning ring (32) during use, the positioning ring (32) is wound with the lifting rope (33), the lifting device is connected with the lifting rope (33), so that the device can be used, the device is placed by cooperating with the clamping installation of the counterweight (36) in the anti-skid seat (23), the device is conveniently installed with the fixed seat (2) and the sampling tank (1) during use, so as to take out the first collecting barrel (4) and the second collecting barrel (5) in the device.

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